Geology


back

Lignite is associated with the Laki shales of Eocene age which is a part of the Tertiary sequence deposited in North-Western parts of Kutch. During the end of cretaceous period and in the early Tertiary times, due to large scale orogenic movements, uplift and subsidence of the crust took place connected with Deccan Trap igneous activity. The Tertiary sea transgressed and submerged the sinking basins bordered by elevated lands presently covered by trap rock. Basins thus formed were the points of loci for the deposition of complete Tertiary sequence ranging in age from Palaeocene to Pleistocene. The accurate configuration of the Tertiary sequence shows close parallelism to the present sea coast. Tertiary sequence deposited in Western Kutch plays an important part in the stratigraphy of Indian Geology and was considered as a typical area in the Indian continent.